Features of Thermal Overload Relay

• All relays are bearing  ISI mark  as per IS/IEC 60947 (Part-4/Section-1).
• Relay cover full range of current

• PK - 1    : 2.5 Amp to 14 Amp.
• PC - 1    : 1 Amp to 18 Amp.
• PC – 2/3 : 9 Amp to 42 Amp.

• The triple pole bimetallic thermal overload relay is of the hand-reset type. It unmistakably indicates overload. A temperature compensation device prevents the relay from being affected by variation in ambient temperature.
• The entire relay unit is housed in Bakelite enclosure and is accurately calibrated and individually tested on an automatic test bench. Setting can be adjusted by means of a pointer.
• Satisfactory operation at all ambient temperatures from  –5 ᵒC  to  55 ᵒC with the help of temperature compensating device.
• PK1, PC1, PC2/3 relays are manual reset type.
• These relays are provided with auxiliary contacts having thermal capacity of 6A and 2A, AC-15 at 415V, 50Hz.
• These relays are suitable for direct mounting on Type PC contactors.
• PK1, PC1, and PC2/3 relays are suitable for trip class of 10A as per IS: 60947 (Part-4/Section-1).
• Compact and most reliably designed.